IEC 2A 2026 Exam Questions
and Answers | A+ Score
Assured
The primary purpose of grounding metal equipment enclosures and
metal raceways to the grounding electrode system (earth) is to ___.
I. cause the quick operation of OCPDs
II.keep all metal parts at the same voltage
III. limit voltage surges - ANSWER ✔✔e. II & III only
A metal enclosure surrounding electrically operated equipment ___.
,a. is required to be grounded
b. protects the equipment from physical damage
c. provides protection for people against accidental contact with live
parts - ANSWER ✔✔d. all of these
The amount of current that flows in any circuit is determined by the
voltage and resistance of the circuit.
Select one:
a. True
b. False - ANSWER ✔✔a. True
___ is defined as case or housing of apparatus, or the fence or walls
surrounding an installation to prevent personnel from accidentally
contacting energized parts or to protect the equipment from physical
damage.
Select one:
a. Inaccessible
b. Guarded
c. Isolated
d. Enclosure - ANSWER ✔✔: Enclosure
,The circuit installed in a run of PVC conduit requires a 6 AWG equipment
grounding conductor. However, a 12 AWG was installed instead. Using
the 12 instead of the 6 AWG wire will ___ the amount of time required for
a circuit breaker to open when a ground fault occurs.
Select one:
a. increase
b. decrease
c. have no effect on - ANSWER ✔✔increase
Providing a low impedance ground return path ___ when a ground-fault
occurs.
Select one:
a. has no effect on the circuit current
b. permits a high current to flow
c. limits the amount of current to a small amount - ANSWER
✔✔permits a high current to flow
In a run of conduit, when couplings and connectors are loose this will
___ the amount of time required for a circuit breaker to open when a
short-circuit occurs.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Select one:
a. have no effect on
b. increase
c. decrease - ANSWER ✔✔have no effect on
The plans indicate that you should install a 300-amp branch circuit in
Schedule 40 PVC with a 4 AWG equipment grounding conductor.
However, you did not have any 4 AWG wire so you pulled in 10 AWG
instead. With a load connected, the normal circuit current will be ___
with the 10 AWG EGC (compared to using a 4 AWG EGC).
Select one:
a. the same
b. less
c. greater - ANSWER ✔✔the same
The primary purpose of grounding metal equipment enclosures and
metal raceways to the grounding electrode system (earth) is to ___.I.
cause the quick operation of OCPDsII. keep all metal parts at the same
voltageIII. limit voltage surges
Select one:
a. I only
and Answers | A+ Score
Assured
The primary purpose of grounding metal equipment enclosures and
metal raceways to the grounding electrode system (earth) is to ___.
I. cause the quick operation of OCPDs
II.keep all metal parts at the same voltage
III. limit voltage surges - ANSWER ✔✔e. II & III only
A metal enclosure surrounding electrically operated equipment ___.
,a. is required to be grounded
b. protects the equipment from physical damage
c. provides protection for people against accidental contact with live
parts - ANSWER ✔✔d. all of these
The amount of current that flows in any circuit is determined by the
voltage and resistance of the circuit.
Select one:
a. True
b. False - ANSWER ✔✔a. True
___ is defined as case or housing of apparatus, or the fence or walls
surrounding an installation to prevent personnel from accidentally
contacting energized parts or to protect the equipment from physical
damage.
Select one:
a. Inaccessible
b. Guarded
c. Isolated
d. Enclosure - ANSWER ✔✔: Enclosure
,The circuit installed in a run of PVC conduit requires a 6 AWG equipment
grounding conductor. However, a 12 AWG was installed instead. Using
the 12 instead of the 6 AWG wire will ___ the amount of time required for
a circuit breaker to open when a ground fault occurs.
Select one:
a. increase
b. decrease
c. have no effect on - ANSWER ✔✔increase
Providing a low impedance ground return path ___ when a ground-fault
occurs.
Select one:
a. has no effect on the circuit current
b. permits a high current to flow
c. limits the amount of current to a small amount - ANSWER
✔✔permits a high current to flow
In a run of conduit, when couplings and connectors are loose this will
___ the amount of time required for a circuit breaker to open when a
short-circuit occurs.
3
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2026. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Select one:
a. have no effect on
b. increase
c. decrease - ANSWER ✔✔have no effect on
The plans indicate that you should install a 300-amp branch circuit in
Schedule 40 PVC with a 4 AWG equipment grounding conductor.
However, you did not have any 4 AWG wire so you pulled in 10 AWG
instead. With a load connected, the normal circuit current will be ___
with the 10 AWG EGC (compared to using a 4 AWG EGC).
Select one:
a. the same
b. less
c. greater - ANSWER ✔✔the same
The primary purpose of grounding metal equipment enclosures and
metal raceways to the grounding electrode system (earth) is to ___.I.
cause the quick operation of OCPDsII. keep all metal parts at the same
voltageIII. limit voltage surges
Select one:
a. I only
